US20060153022A1 - Method and apparatus for reproducing data from recording medium using local storage - Google Patents
Method and apparatus for reproducing data from recording medium using local storage Download PDFInfo
- Publication number
- US20060153022A1 US20060153022A1 US11/325,460 US32546006A US2006153022A1 US 20060153022 A1 US20060153022 A1 US 20060153022A1 US 32546006 A US32546006 A US 32546006A US 2006153022 A1 US2006153022 A1 US 2006153022A1
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- United States
- Prior art keywords
- data
- playlist
- downloaded
- virtual package
- recording medium
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
- G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/327—Table of contents
- G11B27/329—Table of contents on a disc [VTOC]
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
- G11B20/00115—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein the record carrier stores a unique medium identifier
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1288—Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2541—Blu-ray discs; Blue laser DVR discs
Definitions
- an optical disc acting as a recording medium capable of recording a large amount of data therein there has been widely used an optical disc acting as a recording medium capable of recording a large amount of data therein.
- a high-density optical recording medium capable of recording/storing high-quality video data and high-quality audio data for a long period of time, for example, a Blu-ray Disc (BD).
- BD Blu-ray Disc
- the above-mentioned optical recording/reproducing device must consider not only a basic function for recording/reproducing data of the BD, but also an additional function for enabling the optical recording/reproducing device to interact with peripheral digital devices.
- the optical recording/reproducing device must receive an external input signal, must display the received signal, and must reproduce desired data using the external input signal and the BD.
- An object of the present invention is to provide a method and apparatus for downloading data associated with a recording medium from an external part, storing the downloaded data in a local storage, and reproducing the downloaded data using the recording medium associated with the local storage.
- a method for reproducing data from a recording medium using a local storage comprises the steps of: a) downloading data associated with the recording medium, and storing the downloaded data in the local storage; b) generating a virtual package using a binding unit with missing data associated with the recording medium, such that the virtual package includes a PlayList capable of being played before all the data is completely downloaded, and c) playing the PlayList while the missing data is downloaded.
- the missing data can be indicative of stream data.
- the PlayList can reproduce data downloaded in the local storage.
- the virtual package can be generated by a binding unit manifest file associated with the recoding medium.
- a method for reproducing data from a recording medium using a local storage comprising the steps of: a) generating a virtual package for reproducing data in the recording medium and data in the local storage; b) downloading data associated with the recording medium, and updating the virtual package using a binding unit with missing data, such that the virtual packaged includes a PlayList capable of being played before all the data is completely downloaded, and c) playing the PlayList while the missing data is downloaded.
- the PlayList can a main path and at least one sub path, and data referenced by the main path and data referenced by the sub path can be simultaneously downloaded.
- the sub path can be configured with a single SubPlayItem, and downloaded part of a clip referenced by the SubPlayItem can be reproduced while the missing part of the clip is downloaded.
- the sub path can be configured with a plurality of SubPlayItems, and downloaded clips referenced by the SubPlayItems can be reproduced while the missing clips can be downloaded. Also downloaded part of a clip referenced by one of the SubPlayItems can be reproduced while the missing part of the clip is downloaded.
- the PlayList can be played by a BD-J module.
- the virtual package can be updated by a request of BD-J applications
- the method can further comprise the step of: in case that playback position by the PlayList reaches the missing data point during playback, stopping the playback.
- the method can further comprise the step of: in case that an error occurs while the PlayList is played, the error is corrected by execution of BD-j applications.
- the PlayList can be indicative of a Progressive PlayList.
- Data referenced by the Progressive PlayList can be indicated by a binding unit manifest file associated with the recording medium.
- the step b) for updating the virtual package can include the step of: confirming whether the binding unit manifest file contains Progressive PlayList information.
- an apparatus for reproducing data from a recording medium using a local storage comprising: a pickup unit for reading data of the recording medium; a local storage for downloading data associated with the recording medium, and storing the downloaded data; and a controller for generating a virtual package using a binding unit with missing data associated with the recoding medium, such that the virtual package includes a PlayList capable of being played before all the data is completely downloaded, the controller for playing the PlayList while the missing data is downloaded.
- the controller can update the virtual package to generate a ney virtual package, such that the new virtual package includes the PlayList capble of being played before all the data is completely downloaded.
- the missing data can be indicative of stream data.
- the PlayList can reproduce data downloaded in the local storage.
- the controller can generate the virtual package by a binding unit manifest file associated with the recording medium.
- the PlayList can include a main path and at least one sub path.
- the controller can download data referenced by the main path and data referenced by the sub path simultaneously.
- the controller can reproduce downloaded part of a clip referenced by the PlayList while the missing part of the clip is downloaded.
- the controller can reproduce downloaded clips by the PlayList while the missing clips are downloaded.
- the controller can reproduce downloaded part of a clip referenced by the PlayList while the missing part of the clip is downloaded.
- the controller includes a BD-j module, and the BD-J module can play the PlayList.
- the PlayList can be indicative of a Progressive PlayList.
- Data referenced by the Progressive PlayList can be indicated by a binding unit manifest file associated with the recording medium.
- the controller can confirm whether the binding unit manifest file contains Progressive PlayList information.
- FIG. 1 is a conceptual diagram illustrating a method and apparatus for reproducing data from a recording medium according to the present invention
- FIG. 2 is a conceptual diagram illustrating a file structure recorded in an optical disc acting as a recording medium and a method for reproducing a specific title using the file structure;
- FIG. 3 is a structural diagram illustrating a data record structure of an optical disc acting as a recording medium according to the present invention
- FIG. 4A is a block diagram illustrating an optical recording/reproducing device according to the present invention.
- FIG. 4B is a block diagram illustrating an apparatus for reproducing data using a local storage from among overall components contained in the optical recording/reproducing device according to the present invention
- FIG. 5 is a conceptual diagram illustrating a method for generating a virtual package according to the present invention.
- FIG. 6 is a conceptual diagram illustrating a relationship for generating a virtual package according to the present invention.
- FIG. 7 is a structural diagram illustrating a PlayList and an example for playing the PlayList according to the present invention.
- FIG. 8 is a structural diagram illustrating an apparatus for reproducing data of a recording medium using a playback system according to the present invention.
- FIG. 9 shows a PlayList including a sub path configured with a single SubPlayItem (SPI) and an example for playing the PlayList according to the present invention.
- SPI SubPlayItem
- FIG. 10 shows a PlayList including a sub path configured with a plurality of SubPlayItems (SPIs) and an example for reproducing the PlayList according to the present invention.
- SPIs SubPlayItems
- a recording medium for use in the present invention is indicative of all recordable mediums, for example, an optical disc, and a magnetic tape, etc., according to various recording schemes. It should be noted that the term “Disc” is considered to be the same as the recording medium according to the present invention.
- the optical disc such as a BD
- the optical disc will hereinafter be exemplarily used as the above-mentioned recording medium in the present invention. It should be noted that technical ideas of the present invention can be applied to other recording mediums without departing from the scope and spirit of the invention.
- the term “local storage” is indicative of a storage unit contained in an optical recording/reproducing device 10 shown in FIG. 1 .
- the term “local storage” is indicative of a component capable of receiving necessary information or data from a user, and storing the received information or data.
- a general local storage may be indicative of a Hard Disc Drive (HDD), but it should be noted that the term “local storage” of the present invention is not limited to the HDD, and is applicable to other examples as necessary.
- HDD Hard Disc Drive
- local storage is indicative of a storage unit for storing data associated with a recording medium such as a BD.
- the data associated with the recording medium is generally downloaded from an external source.
- the local storage may directly read some permission data from the recording medium, and may generate system data (e.g., metadata) associated with record/reproduction operations of the recording medium, such that the system data may be stored in the local storage.
- system data e.g., metadata
- data recorded in the recording medium is referred to as “original data”
- additional data data associated with the recording medium from among a plurality of data units stored in the local storage.
- FIG. 1 is a conceptual diagram illustrating a method and apparatus for reproducing data according to the present invention. Unified usages of the optical recording/reproducing 10 and peripheral devices are shown in FIG. 1 .
- the optical recording/reproducing device 10 can record/reproduce data in/from various optical discs having different formats. If necessary, the optical recording/reproducing device 10 can record/reproduce specific data in/from only a specific optical disc such as a BD, or can reproduce the data from the optical disc without recording the data in the same. It should be noted that the present invention exemplarily uses a BD-player capable of reproducing data from the BD or a BD-recorder capable of recording data in the BD in consideration of correlation between the BD and peripheral devices for the convenience of description. In association with the above-mentioned description, it is well known in the art that the optical recording/reproduction device 10 is also applicable to a drive embedded in a specific device such as a computer.
- the optical recording/reproducing device 10 records or reproduces data in/from the optical disc 30 , receives an external input signal, performs a signal process on the received signal, and transmits the signal processed result to the external display 20 , such that a user can view the signal processed result on the display 20 .
- an external input signal may be determined to be a DTV-associated signal and an Internet-associated signal, etc.
- the Internet is indicative of a communication network to which a user easily gains access, such that the user can download specific Internet data using the optical recording/reproducing device 10 , and can use the downloaded data.
- a person for providing content data used as an external source is generally referred to as a content provider (CP).
- CP content provider
- Content is indicative of content data of the title, and is equal to data received from an author of a recording medium.
- the present invention aims to reproduce the additional data using the local storage.
- AV Audio/Video
- additional data for use in the Internet is an audio stream different from an audio stream (e.g., Korean) of the original data.
- some users may download specific audio stream (e.g., English) acting as additional data from the Internet, may desire to reproduce the downloaded audio stream along with the AV stream acting as original data, or may desire to reproduce only the additional data.
- correlation between the original data and the additional data must be established, and there is needed a systemized method for managing/reproducing the above-mentioned data according to a user request.
- the original data a signal recorded in the disc
- the additional data other signals existing in the outside of the disc
- the original data and the additional data classified according to their data acquisition methods are not limited to only specific data.
- additional data may be indicative of audio data, presentation graphic (PG) data, interactive graphic (IG) data, or text subtitle, etc., but the additional data may also be indicative of a multiplexed AV stream including the above-mentioned data and video data.
- data associated with the original data simultaneously existing in the outside of the optical disc may act as additional data.
- a predetermined file structure must be established between the original data and the additional data. Accordingly, a file structure and data record structure for use in the BD will hereinafter be described with reference to FIGS. 2 ⁇ 3 .
- FIG. 2 is a conceptual diagram illustrating a file structure for reproducing/managing the original data recorded in an optical disc, and a method for reproducing a specific title according to the file structure.
- the META directory includes a metadata file acting as “Data about Data”.
- the META directory includes a search file and a metadata file for Disc Library and the like.
- the AUXDATA directory includes an additional data file for reproducing data of the disc.
- the AUXDATA directory includes a “Sound.bdmv” file for providing a user with sound data when an interactive graphic function is executed, and an “11111.otf” file for providing the user with font information when data of the disc is reproduced.
- the CLIPNF directory is composed of a plurality of clip information files (01000.clpi and 02000.clpi) connected to the above-mentioned stream files on a one-to-one basis.
- the clip information files (*.clpi) record attribute information and timing information of the stream files (*.m2ts) therein.
- the clip information files (*.clpi) connected to the stream files (*.m2ts) on a one-to-one basis are generically named a “Clip”. In other words, this means that a single clip is indicative of data composed of a stream file (*.m2ts) and a clip information file (*.clpi).
- the PLAYLIST directory includes a plurality of PlayList files (*.mpls).
- Each PlayList file (*.mpls) includes one or more PlayItems and one or more SubPlayItems.
- Each PlayItem and each SubPlayItem are adapted to designate a playing interval during which a specific clip is reproduced.
- the PlayItem (PI) and SubPlayItem (SPI) include information associated with a specific clip to be reproduced, i.e., information associated with a reproduction start time (IN-Time) and other information associated with a reproduction termination time (OUT-Time) of the specific clip.
- a process for reproducing data using at least one PlayItem (PI) in the PlayList file is referred to as a main path, and a process for reproducing data using individual SubPlayItems (SPIs) is referred to as a sub path.
- the PlayList file must contain a single main path.
- the PlayList file may contain at least one sub path according to the presence or absence of the SubPlayItem (SPI) as necessary.
- the PlayList file acts as a basic reproduction/management file unit contained in overall reproduction/management file structures for reproducing a desired clip by combination of one or more PlayItems.
- the BACKUP directory stores a plurality of duplicate files, i.e., a duplicate file (also called “copied files”) of the index file “index” storing information associated with disc reproduction, a duplicate file of the object file “MovieObject”, duplicate files of all PlayList files (*.mpls) contained in the PLAYLIST directory, and duplicate files of all clip information files (*.clpi) contained in the CLPINF directory. If the above-mentioned files (“index”, “MovieObject”, “*.mpls”, and “*.clpi”) are damaged, a disc reproduction process is also fatally damaged, such that the BACKUP directory is designed to pre-store duplicate files of the above-mentioned files as backup files.
- FIG. 2 a method for reproducing a specific title using the above-mentioned disc file structure is shown in FIG. 2 .
- the index file (index.bdmv) includes first playback information “First Playback” indicative of information associated with a first reproduction image when data of a corresponding disc is loaded, top menu information “Top Menu” for providing a menu image, and at least one title information “Title # 1 ⁇ Title #n”.
- title menu information associated with the index table is provided to the user via the display 20 .
- data reproduction begins according to a scenario pre-defined by a disc manufacturer.
- a specific PlayList file is executed according to a command contained in the object file (MovieObject) of the reproduction/management file structure.
- one or more clips e.g., Clip # 1 Clip # 3
- the title # 1 are reproduced by a specific PlayItem and/or SubPlayItem contained in the PlayList file according to the PlayList file information.
- FIG. 3 is a structural diagram illustrating a data record structure recorded in a recording medium according to the present invention.
- FIG. 3 shows a disc record format of information associated with the file structure.
- the above-mentioned disc structure sequentially includes a file system information area serving as system information for managing overall files, a database area for recording a PlayList file and a clip information file to reproduce a recorded AV stream (*.m2ts), and an AV stream area for recording a plurality of streams composed of audio data, video data, and graphic data, etc.
- a file system information area serving as system information for managing overall files
- an AV stream area for recording a plurality of streams composed of audio data, video data, and graphic data, etc.
- data recorded in the AV stream area may be determined to be original data as previously stated above.
- the present invention provides a method and apparatus for simultaneously reproducing original data (e.g., a file structure shown in FIG. 2 ) recorded in the disc and additional data recorded in the local storage, and a variety of preferred embodiments according to the present invention will hereinafter be described.
- original data e.g., a file structure shown in FIG. 2
- additional data recorded in the local storage
- FIG. 4A is a block diagram illustrating the optical recording/reproducing device 10 according to the present invention.
- the optical recording/reproducing device 10 includes a pickup 11 , a servo 14 , a signal processor 13 , and a microprocessor 16 .
- the pickup 11 reads original data recorded in the optical disc and management information including reproduction/management file information.
- the servo 14 controls operations of the pickup 11 .
- the signal processor 13 receives a reproduction signal from the pickup 11 , restores the received reproduction signal to a desired signal value, or modulates a signal to be recorded into another signal recorded in the optical disc, such that it transmits the restored or modulated result.
- the microprocessor 16 controls overall operations of the above-mentioned components.
- a controller 12 downloads additional data from outside of the optical disc upon receiving a command from a user, stores the downloaded additional data in the local storage 15 , and configures a binding unit using binding unit manifest information recorded in a binding unit manifest file of the local storage.
- the controller 12 generates a virtual file structure (hereinafter referred to as a virtual package) using the binding unit manifest information recorded in the binding unit manifest files, such that it can reproduce data contained in the recording medium and data contained in the local storage.
- the controller reproduces the original data and/or the additional data using the virtual package upon receiving a request from a user.
- the virtual package generated by the controller 12 includes at least one virtual PlayList including a PlayItem capable of reproducing a plurality of clips.
- binding unit manifest file In association with the above-mentioned description, the binding unit manifest file, the name mapping information, and the virtual package will hereinafter be described with reference to FIG. 5 .
- the AV decoder 17 finally decodes output data (i.e., original data and/or additional data) upon receiving a control signal from the controller 12 , and provides the user with the decoded result.
- output data i.e., original data and/or additional data
- the AV encoder 18 converts an input signal into a specific format signal (e.g., an MPEG2 transport stream) upon receiving a control signal from the controller 12 , and transmits the converted result to the signal processor 13 .
- a specific format signal e.g., an MPEG2 transport stream
- the new virtual package may be stored in the local storage 15 such that it can be re-used in future. Also, the new virtual package may be temporarily stored in an additional dynamic memory, and may then be used.
- FIG. 4B is a block diagram illustrating an apparatus for reproducing data of an optical disc using a local storage from among overall components contained in the optical recording/reproducing device 10 according to the present invention.
- the local storage 15 stores file information (Directory-File for disc_ID #n dependent) including directories and files of individual disc identification (ID) information, and a plurality of additional clips downloaded from an external part.
- file information Directory-File for disc_ID #n dependent
- ID individual disc identification
- the local storage 15 may include a binding unit manifest file for forming a binding unit of the local storage 15 , and performing a binding operation associated with a disc package.
- the local storage 15 may include a plurality of file information units (Directory-File for disc_ID #n dependent) to cope with different discs. Therefore, the local storage 15 additionally requires a file system for managing the above-mentioned file information units.
- the file system is also referred to as a local storage file system 41 , and the local storage file system 41 is indicative of a system for managing all files stored in the local storage 15 .
- an optical disc e.g., disc_ID # 1
- the controller 12 contained in the optical recording/reproducing device 10 recognizes ID information of the disc using the pickup 11 and the signal processor 13 . If the local storage 15 stores file information, the controller reads binding unit file information equal to the loaded disc ID information from among all file information units stored in the local storage 15 , generates a virtual package by binding (or combining) the read information and the disc package, and reproduces both the original data of the disc and the additional data of the local storage using the formed virtual package.
- the optical recording/reproducing device downloads data from an external input source to form a binding unit, reads the binding unit file information, and forms a virtual package by binding (or combining) the read information with the disc package.
- a method for generating the virtual package according to the present invention will hereinafter be described with reference to FIG. 5 .
- FIG. 5 is a conceptual diagram illustrating a method for generating the virtual package according to the present invention.
- the optical recording/reproducing device 10 reads the file system information 41 contained in the local storage 15 , and at the same time reads disc file system information 42 including the file structure recorded in the disc, resulting in the creation of the VFS.
- the virtual file system is indicative of a file system virtually constructed to manage both the file system contained in the local storage 15 and the other file system of the loaded disc.
- the optical recording/reproducing device generates a new virtual package to simultaneously reproduce original data recorded in the disc and additional data recorded in the local storage using the above-mentioned virtual file system (VFS).
- the optical recording/reproducing device 10 reads file information (Directory-File for disc_ID # 1 dependent) associated with the disc (e.g., disc_ID # 1 ) from the file system, forms a binding unit according the read binding unit manifest information, reads the formed binding unit, and performs a binding operation for replacing the read file information with a disc package of the loaded disc (disc_ID # 1 ) according to either name mapping information or Progressive PlayList information recorded in the binding unit manifest file, or appending the read file information to the disc package according to either name mapping information or Progressive PlayList information recorded in the binding unit manifest file.
- a detailed description of the Progressive PlayList will be described with reference to the annexed drawings from FIG. 7 .
- the name mapping information according to the present invention is indicative of information recorded in the binding unit manifest file contained in a directory and/or a file structure of a local storage, and is used when the binding unit is formed or when the binding operation is executed to form the virtual package.
- “Files and Titles Relation List” information, “Progressive PlayList” information, and “Credential” information may be contained in the binding unit manifest file.
- the aforementioned “Files and Titles Relation List” information is adapted to delete/verify data in title units.
- the aforementioned “Credential” information is adapted to bind or combine files shared by different content providers with each other.
- the virtual package formed by the aforementioned binding operation is indicative of a file structure for reproducing/managing an original clip 422 and an additional clip 412 .
- the original clip 422 is composed of original data recorded in the disc.
- the additional clip 412 is composed of additional data recorded in the local storage.
- FIG. 6 is a conceptual diagram illustrating a relationship for generating a virtual package according to the present invention.
- a specific file structure (i.e., the disc package of FIG. 2 ) is recorded in the loaded disc, and may be referred to as a disc package.
- a local storage file system 41 is contained in the local storage.
- the local storage file system 41 includes a binding unit combined with the loaded disc (e.g., disc_ID # 1 ), and a binding unit manifest file.
- all files referenced by the binding unit manifest file and the binding unit manifest file of the disc may act as Read-only files.
- the binding unit manifest file includes name mapping information.
- the name mapping information includes a variety of information associated with the binding unit.
- the name mapping information includes list information of files contained in the binding unit, location information where the files of the binding unit are located in the virtual package when the binding unit is combined with the disc, and file name information in the virtual package, etc.
- the virtual file system performs a binding operation for combining the binding unit with the disc package of the loaded disc using the above-mentioned binding unit manifest information, such that it forms a new virtual package.
- the BDMV directory acting as a lower directory of the root directory includes an index file (index.bdmv), an object file (MovieObject.bdmv), a PlayList file (00000.mpls), a clip information file (01000.clpi), a stream file (01000.m2ts), and an Auxiliary file (sound.bdmv).
- the name mapping information is indicative of information associated with files contained in the binding unit.
- a PlayList file (Apr2005.mpls) 611 is changed (or modified) to a PlayList file (00000.mpls) 511 of the PLAYLIST directory in the virtual package 51
- a clip information file (Apr2005.clpi) 612 is changed to a clip information file (02000.clpi) 512 of the CLIPINF directory in the virtual package 51
- a stream file (Apr2005.m2ts) 613 is changed to a stream file (02000.m2ts) 513 of the STREAM directory in the virtual package 51
- an auxiliary file (Japanese.otf) 614 is changed to an auxiliary file (11111.otf) 514 of the AUXDATA directory in the virtual package 51 .
- the name mapping information includes location- and file name-information of the aforementioned changed files.
- the virtual file system (VFS) 40 performs the binding operation, if the binding operation is performed according to the name mapping information recorded within the binding unit manifest file in the local storage 15 and the virtual package is generated by the binding operation, the resultant file structure is as follows.
- the virtual package 51 includes the BDMV directory acting as a lower directory of the root directory.
- the BDMV directory includes an index file (Index.bdmv), an object file (MovieObject.bdmv), a PLAYLIST directory), a CLIPINF directory, a STREAM directory, and an AUXDATA directory.
- the PLAYLIST directory includes a PlayList file (00000.mpls) 511 acquired when a PlayList file of the disc package 62 is replaced with a PlayList file of the binding unit.
- the CLIPINF directory includes a clip information files (02000.clpi) 512 of the binding unit which is appended to the clip information file (01000.clpi) of the disc package 62 .
- the STREAM directory includes a stream file a stream file (02000.m2ts) 513 of the binding unit which is appended to the stream file (01000.m2ts) of the disc package 62 .
- the AUXDATA directory includes an Auxiliary file (11111.otf) 514 of the binding unit which is appended to the Auxiliary file (sound.bdmv) of the disc package 62 . In this process, the virtual package 51 is generated.
- the downloading application recognizes current binding unit structure information contained in the loaded disc-dependent directory and the disc-dependent-shared directory (Shared), and informs an external CP of the recognized binding unit structure information.
- a user selects content data downloaded for reproducing data of the disc.
- the CP provides all data (e.g., an index table and a PlayList, etc.) of database files appropriate for a disc on the basis of the report result received from the downloading application associated with the current binding unit structure information.
- data e.g., an index table and a PlayList, etc.
- the downloading application of the optical recording/reproducing device downloads data of the selected files for the disc in the local storage, forms a virtual file system (VFS), and forms/update a virtual package using the virtual file system (VFS).
- VFS virtual file system
- FIG. 7 is a structural diagram illustrating a PlayList and an example for reproducing the PlayList according to the present invention.
- the PlayList may be a Disc-dependent PlayList or a Disc-independent PlayList. If the second PlayList is equal to the disc-dependent PlayList, a user can freely download/reproduce data referenced by the second PlayList at any time, or data referenced by the second PlayList can be reproduced by itself without being combined with a disc package.
- the present invention relates to the disc-dependent PlayList. According to the present invention, data associated with a specific disc is downloaded from an external part, and the downloaded data is combined with the disc package as previously stated above.
- FIG. 7 A method for reproducing data according to the aforementioned second PlayList will hereinafter be described with reference to FIG. 7 .
- Progressive PlayList is used as an example in FIG. 7 . It is assumed that the virtual package exists before downloading data associated with a loaded disc from an external source in FIG. 7 .
- the virtual package may be generated from a disc package contained in the disc after the disc is loaded in the optical recording/reproducing device. Otherwise, the virtual package may be generated by combining data of the disc package with data of the local storage. The virtual package may be updated by the data downloaded from the external source. A method for updating the virtual package after downloading some stream files will hereinafter be described in detail.
- a PlayList file (*.mpls) of the Progressive PlayList # 1 , the clip information file 701 of a clip reproduced by the Progressive PlayList # 1 , and some (1.m2ts, 2.m2ts, and 3.m2ts) of the stream file 702 are downloaded before data reproduction starts.
- the virtual package including the Progressive PlayList # 1 is generated using the downloaded data (i.e., a PlayList file (*.mpls), a clip information file 701 , and stream files 1 , 2 , and 3 (1.m2ts, 2.m2ts, and 3.m2ts)) according to the binding unit manifest file.
- the aforementioned Progressive PlayList # 1 is indicative of a PlayList capable of being played before all the data is downloaded. Therefore, after the virtual package is updated by the binding unit with missing stream files, the BD-J application can play the PlayList although all stream files required to play the PlayList are not in place.
- the missing stream data (4.m2ts ⁇ n.m2ts) not downloaded before the virtual package is updated is downloaded while the virtual package is updated or while the Progressive PlayList # 1 is played.
- a BD-J application After the missing stream data (4.m2ts ⁇ n.m2ts) is stored at the location indicated by a binding unit manifest file, a BD-J application generates a request to reproduce a specified clip. After the player receives the above-mentioned request, it does not need to wait for a predetermined time to pass until a title is changed to another title. The player sets specified stream data to be read-only, and can immediately reproduce a corresponding clip according to the name mapping information contained in the binding unit manifest file.
- specific information indicative of the allowance or rejection of the Progressive PlayList may be included in the Progressive PlayList information. Namely, it can be confirmed by confirming whether the binding unit manifest file contains Progressive PlayList information. If the binding unit manifest file contains the Progressive PlayList information, the virtual package is updated so that the updated virtual package includes the Progressive PlayList. However, if the binding unit manifest file does not contain the Progressive PlayList information, the virtual package cannot be updated before the download of data is completed.
- the PlayList file (*.mpls) and the clip information file (*.clpi) may be downloaded before the Progressive PlayList starts its reproduction.
- data which is downloaded during the reproduction time of the Progressive PlayList whereas it is not downloaded before the reproduction begins, may be stream data.
- the Progressive PlayList may reproduce downloaded stream files instead of stream files recorded in a recording medium.
- the Progressive PlayList should be treated as a new title that is bound to a disc.
- the PlayList should be treated as a normal BD-J title.
- FIG. 7 shows an example in which some of stream files are downloaded and then the virtual package is updated, but it should be noted that the present invention is not limited to the example of FIG. 7 and is applicable to other examples.
- the virtual package may be updated on the condition that only the PlayList file (*.mpls) and the clip information file (*.clpi) are downloaded.
- stream data unused for updating the virtual package may be immediately downloaded simultaneously with updating the virtual package, or may be reproduced simultaneously with being downloaded upon receiving a playback command from a user.
- the PlayList of the present invention may also be played by the following BD-J module.
- the present invention can stop the playback.
- a malfunction or error e.g., undownloaded data needs to be reproduced
- the playback by the PlayList may be corrected by the BD-J application.
- the BD-J application can play the Progressive PlayList even if the Progressive PlayList includes the missing clips. However, if the playback position reaches the missing stream point during the playback operation, the player allows the media player and the Playback Control Engine to enter a stopped state. If the playback position is changed to the missing clip point by a jump operation of a user, the playback operation may stop at the jumped place and then the stop event may be transmitted to the BD-J application. If the BD-J application specifies a playback position with the missing stream, the player may allow the media player and the Playback Control Engine to enter a stopped state.
- the term “playback system” is indicative of a collective reproduction processor implemented by software and/or hardware contained in the optical recording/reproducing device.
- the playback system is indicative of a system which reproduces data of a recording medium loaded in the optical recording/reproducing device, and at the same time reproduces/manages data (e.g., data downloaded from an external part) stored in the local storage in association with the recording medium.
- the HDMV module 174 acting as an additional reproduction process module capable of reproducing the HDMV title and the BD-J module 175 acting as an additional reproduction process module capable of reproducing the BD-J title are constructed independently of each other.
- the HDMV module 174 receives a command or program contained in the above-mentioned object file “Movie Object”, and the BD-J module 175 receives a command or program contained in the above-mentioned object file “BD-J Object”, such that the HDMV module 174 and the BD-J module 175 process the received command or program.
- the HDMV module 174 includes a command processor 174 a
- the BD-J module 175 includes an application manager 175 a and a Java VM 175 b , such that the HDMV module 174 and the BD-J module 175 can receive/process the above-mentioned command.
- the playback control engine 176 is classified into a playback control function 176 a for managing all the reproduction operations, and a player register 176 b for storing player status register (PSR) information and general purpose register (GPR) information.
- the playback control function 176 a may also be indicative of the playback control engine 176 as necessary.
- the playback control engine 176 can access one of a plurality of smaller clips contained in the Progressive PlayList while another clip is downloaded.
- the module manager 172 , the HDMV module 174 , the BD-J module 175 , and the playback control engine 176 contained in the playback system can be processed by software. It is preferable that the above-mentioned components 172 , 174 , 175 , and 176 are processed by software instead of hardware.
- the presentation engine 177 , the decoder, and the planes are generally hardware based. Constituent components (e.g., 172 , 174 , 175 , and 176 ) processed by software may be integrated in one unit, such that the integrated unit may be installed into the controller 12 . Therefore, it should be noted that the above-mentioned components of the present invention be understood on the basis of their meanings, and are not limited to their implementation methods such as hardware or software implementation.
- the characteristics of the playback system 17 are as follows.
- the HDMV module 174 for the HDMV title and the BD-J module 175 for the BD-J title are configured independently of each other, and the two modules 174 and 175 cannot be executed at the same time.
- the BD-J title cannot be reproduced when the HDMV title is reproduced, and the HDMV title cannot be reproduced when the BD-J title is reproduced.
- the playback system includes a BD-J applications for actually managing the local storage 15 , such that the BD-J applications can manage a network function contained in the optical recording/reproducing device in the same manner as in additional data downloaded from an external part, and can form a virtual package by editing files stored in the local storage 15 or combining the files with the disc package.
- the BD-J applications form a virtual file system (VFS) 40 capable of managing a disc file system and a local storage file system as a single system, and form/manage the virtual package for reproducing original data and additional data using the virtual file system (VFS) 40 .
- a method for generating the virtual package using the virtual file system (VFS) 40 has been previously stated above.
- the HDMV title and the BD-J title receive user commands based on different schemes, respectively.
- the HDMV title and the BD-J title use different methods for performing individual user commands.
- the above-mentioned operations are performed by the user event manager 171 a .
- the user event manager 171 a transmits the user command to the module manager 172 or the UO controller 171 a .
- the user event manager 171 a transmits the received user command to the Java VM 175 b contained in the BD-J module 175 .
- one of the modules 174 and 175 manages the above-mentioned playback control engine 176 (also called a master).
- the HDMV module 174 acts as a master of the playback control engine 176 .
- the BDJ module 175 acts as a master of the playback control engine 176 .
- the playback system may include a metadata manager 173 .
- the metadata manager 173 provides a user with the Disc Library and Enhanced Search Metadata Application.
- the PlayList according to the present invention may include at least one sub path along with a main path. If the PlayList includes the sub path, the main path and the sub path must be decoded/displayed at the same time.
- FIG. 9 shows a PlayList including a sub path configured with a single SubPlayItem (SPI) and an example for playing the PlayList according to the present invention.
- FIG. 10 shows a PlayList including a sub path configured with a plurality of SubPlayItems (SPIs) and an example for playing the PlayList according to the present invention.
- the PlayList including a sub path configured with a single SubPlayItem (SPI) and its reproduction example are shown in FIG. 9 .
- the present invention may update the virtual package and may play the PlayList on the condition that only some part of the clip specified by the SubPlayItem is downloaded.
- the missing part of the clip may be downloaded while the virtual package is updated or while the PlayList is played, and a detailed description thereof will hereinafter be described with reference to FIG. 9 .
- the SubPlayItem (SPI) of the sub path of the Progressive PlayList # 1 includes IN-Time information and Out-Time information of a clip to be reproduced.
- the clip specified by the SubPlayItem includes a single clip information file (11.clpi) 903 and a single stream file (11.m2ts) 904 .
- the update request of the virtual package may occur on the condition that the PlayList file (*.mpls) of the Progressive PlayList # 1 , a clip information file 901 and some files (1.m2ts and 2.m2ts) of the stream files 902 reproduced by the main path, and a clip information file (11.clpi) 903 of the clips and some parts 904 a of the stream file (11.m2ts) 904 reproduced by the sub path are downloaded. If the above-mentioned update request of the virtual package occurs, the virtual package is updated by the downloaded data. If the virtual package is updated, the aforementioned Progressive PlayList # 1 can be played.
- the missing data data (3.m2ts ⁇ n.m2ts) 904 b not downloaded before the virtual package is updated is downloaded while the Progressive PlayList # 1 is played.
- the player can recognize how much data of the clip reproduced by the sub path is downloaded on the basis of information indicative of a downloaded length of the sub path data.
- the PlayList (denoted by “Progressive PlayList # 1 ” in FIG. 10 ) including a sub path configured with a plurality of SubPlayItems (SPIs) and its reproduction example are shown in FIG. 10 .
- SPIs SubPlayItems
- the sub path is configured with a plurality of SubPlayItems (SPIS) (SPI # 11 ⁇ SPI #m), and each SubPlayItem (SPI) designates a single clip.
- SPIS SubPlayItems
- the PlayList file (*.mpls) of the Progressive PlayList # 1 the clip information file 1001 of the main path, the clip information file 1003 of the sub path, some files (1.m2ts and 2.m2ts) of the stream file 1002 of the main path, and some files (11.m2ts and 12.m2ts) of the stream file 1004 of the sub path are downloaded, and a request for updating the virtual package may occur.
- the missing data (3.m2ts ⁇ n.m2ts) not downloaded before the aforementioned reproduction operation begins may be downloaded while the virtual package is updated or while the Progressive PlayList # 1 is reproduced, as previously stated above.
- FIGS. 9 and 10 exemplarily show a method for updating the virtual package after some stream files are downloaded
- the present invention may update the virtual package on the condition that only the PlayList file (*.mpls) and the clip information file (*.clpi) are downloaded.
- stream data unused for updating the virtual package may be downloaded simultaneously with updating the virtual package, or may be downloaded/reproduced after a user enters a playback command, as previously stated in FIG. 7 .
- a new virtual package may be generated before all the data is completely downloaded, such that the new virtual package includes a PlayList capable of being played before all the data is completely downloaded, as previously stated in FIG. 7 .
- the controller 12 updates the virtual package to generate new virtual package, such that the new virtual package includes the inventive PlayList.
- the missing data is indicative of stream data.
- the inventive PlayList reproduces data downloaded in the local storage.
- the PlayList can be configured with a main path and at least one sub path.
- the controller 12 can control to download simultaneously data referenced by the main path and data referenced by the sub path.
- the controller 12 can reproduce some clips or part of a clip while missing clip or missing part of the clip is downloaded.
- the inventive PlayList may be reproduced/managed by the BD-J module 175 , and the controller 12 may include the BD-J module.
- a method and apparatus for reproducing data from a recording medium using a local storage can effectively reproduce additional data, which is downloaded in the local storage in association with the recording medium, resulting in the creation of more convenient functions for a user.
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Also Published As
Publication number | Publication date |
---|---|
CN101099208B (zh) | 2010-05-12 |
KR20060081330A (ko) | 2006-07-12 |
CN101099200A (zh) | 2008-01-02 |
US20060164930A1 (en) | 2006-07-27 |
BRPI0519632A2 (pt) | 2009-03-03 |
JP2008527601A (ja) | 2008-07-24 |
BRPI0606405A2 (pt) | 2009-12-22 |
CN101099213A (zh) | 2008-01-02 |
CN101099200B (zh) | 2010-07-14 |
CN1855277A (zh) | 2006-11-01 |
KR20060081333A (ko) | 2006-07-12 |
KR20060081323A (ko) | 2006-07-12 |
US20060153021A1 (en) | 2006-07-13 |
CN1855277B (zh) | 2010-05-12 |
CN101099213B (zh) | 2010-08-18 |
CN101099208A (zh) | 2008-01-02 |
RU2007130078A (ru) | 2009-02-20 |
RU2007130084A (ru) | 2009-02-20 |
US20060153016A1 (en) | 2006-07-13 |
JP2008527597A (ja) | 2008-07-24 |
US7761422B2 (en) | 2010-07-20 |
JP2008527596A (ja) | 2008-07-24 |
KR20060081331A (ko) | 2006-07-12 |
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